Hi folks, I could use some help:
This morning I started up my PC and briefly loaded a game. After a few seconds the black boxes appeared across the screen, almost like a chess board, and then the PC locked up and restarted. Since then I can only get the graphics card to work in safe mode. Attempting to boot normally results in 'no signal' being output to the monitor.
I have tried some obvious things like uninstalling and reinstalling the graphics driver, using a restore point, or running the Windows 10 repair disc utility.
I had the bright idea of trying to fall back on the Intel 4600 chipset on my i7 4790k, however I can't start the PC with this either as it fails to start in a loop ('Video_Scheduler_Internal_Error'). I have a feeling this may be because the nvidia card is still installed ... although again if I start in safe mode, it works??
The card in question is an old GTX 770 2GB. I had been considering replacing it for a while, but prices of GPUs are pretty crazy right now, so I've been putting it off.
I don't have a lot of experience of troubleshooting hardware, although my instinct is that the graphics card has failed or is failing - is there any more troubleshooting I can attempt? Unfortunately I do not have access to another PC, or an alternative card to try.
If it helps, the motherboard is an Asus Z97-K. The machine is about 4 years old, but I was otherwise fairly happy with its performance and not intending to upgrade much. 16 GB ram, Windows 10 64 bit, updated regularly.